esses



(No Model.)

J'. Pi TIERNEY.

TRANSOM VBNTILATOR. I No. 343,781. Patented June 15, 1886.

Tia/1.

Witnesses:

N. PEYERS. PholzrLllhngnphsr. Wi'ahinR10n.D.C.

UNITED STATES PATENT OEEIcE.

JOHN P. TIERNEY, OF OAKLAND, CALIFORNIA.

TRANSOM-VENT! LATO R.

SPECIFICATION forming part of Letters Patent No. 343,781, dated June 15,1886.

Application filed February 3, 1886. Serial No. 190,734. (No model.)

To all whom it may concern.-

Be it known that I, JOHN P. TIERNEY, a citizen of the United States,residing at Oakland, in the county of Alameda and State of California,have invented a new and useful Transom-Ventilator and Screen Combined,of which the following is a specification.

Referring to the accompanying drawings, forming a part of thisspecification, Figure l is a front elevation of my transom-ventilatorand screen, partly in section. Fig. 2 is a longitudinal section with thescreen removed. Fig. 3 is a cross-section.

Tho frame A of my ventilator and screen is made double, to form groovesor ways 13 B for the two sashes G C. At opposite ends in the bottom ofthe ways or grooves is placed a longitudinal rod, D, around which iscoiled a spiral spring, D, and over these springs the bottoms of thesashes move in opposite directions, each in its independent and separategroove or way, in which operation the spiral springs are expanded orcontracted by means of the clips or lugs E E, attached to opposite endsof the sashes, respectively, which engage the loose ends of the springsand carry them forward with the sashes, in contracting, toward theopposite ends of the casing or frame, and expanding and forcing back thesashes when the latter are released. Both of the sashes are operatedsimultaneously by means of a cord or wire, F, connected to the ends,which cord passes around a pulley, G, in the head or end of the sash O,passing along the groove of that portion of the frame and out overpulleys I, and from thence to a permanent fastening connected to acasing of a window or the jamb of a door. By drawing the cord F downwardthe sashes will be moved outward in opposite directions along the waysor grooves of the frame and the sashes closed against the ends of thecasing or frame.

In operation, when the springs are contracted, the two sashes areparallel or opposite each other, and a space, J, is left for ventilationwithin the casing at both ends of the sashes.

When the sashes are in the position above described, in order to preventvermin-such as flies or mosquitoes-from entering the apartment, Iconnect, by means of hinges, a wire or other screen, K, which shuts upwithin a ledge or rabbet of the casing or frame, admitting fresh air tothe apartment, to the exclusion of all vermin.

Having thus described my inventi on, what I claim, and desire to secureby Letters Patent, 1s-

1. In a ventilator for transoms, the combination, with the twin sashesadapted to move in parallel ways in opposite directions, of means forclosing the same, consisting of cord or wire connections and reactionarysprings for opening them when the cord connection is released, toprovideventilating-spaces at both ends of the sashes, substantially asdescribed.

2. In a transom or other ventilator, the twin sashes moving in ways orgrooves in the frame or casing in opposite directions, in combinationwith cords and pulleys and resilient springs, constructed, arranged,and. operating substantially in the manner as set forth and specified.

3. In combination with a transom-ventilator provided with twin sashesadapted to operate as described, the hinged screen shutting within thecasing or frame in front of the sashes, in the manner shown anddescribed.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

JOHN P. TIERNEY. [L s.]

Witnesses:

O. W. M. SMITH, CHAS. E. KELLY.

